51. On some nights, in high northern latitudes, the sky itself offers another ghostly image that signals the loss of ecological balance now in progress: On some nights, in the area at a high northern latitude, the sky alone presents another example of ill omen showing there...
3. Assortative mating-common phenomenon; most mates are chosen nonrandomly; sexual selection= choose mate with best characteristics; or artificial selection= humans breed organisms for advantageous alleles. 我們有專家為這個問題所編寫的解答! 2004 Darwin is considered the "father of evolutionary biology....